Artist names beginning with O
| Orbeck, Leonard Jay | American, active second half 20th century |
| Orcagna | Italian, active 1343 - 1368 |
| Orcagna, Andrea | Italian, active 1343 - 1368 |
| Orkin, Ruth | American, 1921 - 1985 |
| Orléans, Philippe II, duc d' | French, 2 August 1674 - 2 December 1723 |
| Orléans, Charles d' | French, 1391 - 1465 |
| Orléans, Charles, duc d' | French, 1391 - 1465 |
| Orléans, Duc de Nemours, Louis d' | French, 1814 - 1896 |
| Orléans, duc de Montpensier, Antoine Marie Philippe Louis d' | French, 1775 - 1807 |
| Orley, Bernard van | Netherlandish, c. 1488 - 1541 |
| Orley, Richard van | Flemish, 1663 - 1732 |
| Orley, Valentijn van | Netherlandish, 1466 - 1532 |
| Orlik, Emil | German, 1870 - 1932 |
| Orloff, Gregory | American, 1890 - 1981 |
| Orlovskii, Aleksandr Osipovich | Russian, 1777 - 1832 |
| Orlovsky, Alexander | Russian, 1777 - 1832 |
| Orlowski, Alexander | Russian, 1777 - 1832 |
| Orlowski, Hans | German, 1894 - 1967 |
| Orme, Edward | British, 1774 - 1816 or after |
| Orme, Philibert de L' | French, probably 1515 - 1570 |
| Orozco, José Clemente | Mexican, 1883 - 1949 |
| Orpen, William Newenham Montague, Sir | Irish, 1878 - 1931 |
| Orpen, William, Sir | Irish, 1878 - 1931 |
| Orr, James Wallace | Scottish, born 1907 |
| Orr, Nathaniel | American, active 1844/1881 |
| Orsi, Lelio | Italian, 1525 - 1587 |
| Ortman, George Earl | American, born 1926 |
| Osbert, Alphonse | French, 1857 - 1939 |
| Osbold, John | American, active c. 1935 |
| Page 4 - Artists 88 thru 116 of 167 | ||
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